Prestressed square pile and steel lattice column integrated column

Abstract

The invention discloses an upright column integrated with prestressed square piles and steel lattice columns, which includes steel lattice columns, square piles and square pile inserts, and the square piles include hollow square column structures and square piles that are square on the outside and round on the inside. The end plate, the square pile end plate is fixed on the top of the hollow square column structure, the square pile insert is fixed and inserted inside the square pile, the upper end of the square pile insert is fixedly connected with the square pile end plate of the square pile, and the lower end of the square pile insert is fixed A supporting plate is installed, and the inner space of the supporting plate and the square pile located above the supporting plate forms a pouring space, in which the expansive concrete is poured, and the steel lattice column is fixedly connected to the upper end of the square pile insert core. The present invention will pre- Stressed square piles and steel lattice columns are combined as a column system for horizontal support of deep foundation pits. The construction speed is faster, the cost is saved, and the overall rigidity is high. Advantages of floor waterproof construction.

Description

technical field [0001] The invention relates to an upright column in a support system in a deep foundation pit, in particular to an upright column integrated with a prestressed square pile and a steel lattice column, which can also be applied to a tower crane combined foundation placed in a deep foundation pit. Background technique [0002] In recent years, with the rapid economic development, land intensive development has received more and more attention, and the application of ultra-deep underground space has also increased, especially in urban dense areas, where deep and large foundation pits are used widely used. For deep foundation pits, as a measure to ensure the safety of deep foundation pit support and minimize the impact on the surrounding environment-inner support is widely used. [0003] As the internal support system, steel structure or concrete structure is generally used. For large-scale foundation pit systems, due to the possible tension of the first-floor s...

AI Technical Summary

Problems solved by technology

[0005] 2. Analysis of the advantages and disadvantages of the existing columns

[0012] (1) Using bored piles for construction, the corresponding economic costs are relatively high, and mud pollution will be generated during the construction process

[0013] (2) The verticality of the steel lattice column is difficult to control, and the direction of the section of the steel lattice column is difficult to control, so that when the support beam is constructed, the steel bars of the support beam cannot pass through the steel lattice column, which will also affect the support and the steel lattice. The joint bearing of the lattice column has adverse effects, and at the same time, due to poor verticality control, the bearing capacity of the steel lattice column is greatly reduced, and some projects even need to be strengthened

However, it is more complicated to deal with waterproofing through the bottom plate

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